Tension device for spinning-frames.



R. G. GARLE.

TENSION DEVICE FOR SPINNING FRAMES.

APPLICATION mum D110.10,1913.

1,106,280. Patented 1914.

2 SEE HEET 1.

R. G GARLE.

TENSION DEVICE FOR. SPINNING FRAMES,

APPLICATION TILED 11130.10. 1913v Patented Aug. 4, 1914.

2 SIIBETSSHBET 2 NE FATS 51'" OFFICE.

TENSION DEVICE FOR SPINNING-FRAMES.

To all whom it may concern Be it known that I, ROBERT Gr. CARLE, a citizen of the United States, residing at l voonsocket, Rhode Island, have invented certain new and useful Improvements in Tension Devices for Spinning-Frames, of which the following is a specification.

My invention relates to improvements in devices for taking up slack of the spindle driving bands of spinning frames, spinning mules and twisters and is an improvement upon the device made the subject matter of Letters Patent Number 812,919, of February 20, 1909, issued to me.

The object of my invention is to provide an extremely simple, economical and efiicientdevice; and with these and other obj ects in view the invention includes the features of construction and arrangement and construction of parts hereinafter described and more particularly pointed out in the claims, it being understood that I do not wish to limit myself with regard to the details of the different parts of my invention.

I have illustrated the invention in the accompanying drawings in which:

Figure 1 represents a plan view of a single portion of the mule to illustrate the invention. Fig. 2 is a section on line 2--2 of Fig. 1. Fig. 3 is a section on line 3--3 of Fig.

1. Fig. 4 is an enlarged view of a pulley and its support with parts in section. Fig. 5 shows a blank from which is formed the pulley support or arm shown in Fig. 4. Fig. 6 is a bottom plan view of the pulley arm. Fig. 7 shows the blank for making the tension pulley arm. Fig. 8 shows the blank in .Fig. 7 completely shaped. Fig. 9 shows the arm in Fig. 8 in place with its connections. Fig. 10 is a detail of Fig. 9. Fig. 1.1 is a detail view of a modified form of pulley.

In the drawings the ordinal 1 indicates the drum or driving cylinder and 5 the pulleys mounted on the spindles 6.

7 designates a driving band passing around the drum 4 and the pulleys 5 and by which motion is imparted to the spindles in the 0rdinary and well known manner.

Upon the frame-bar 8, are mounted members 9 adapted to receive and hold a rod 10 parallel to the frame 8 and above it. Ad

Specification of Letters Patent.

Application filed December 10, 1913.

Patented Aug. 4, 1914. Serial No. 805,823.

justably secured to this rod 10 are brackets or arms 11, 12, 13 and 14. These arms are made of a single piece of flat metal as shown in Fig. 5, bent into shape as shown in Figs. 6 and 4. That is, between the lines a and b, the metal is bent to form a seat to fit the rod 10 and at the same time provide two forks or legs, as shown in Fig. 4, formed by bending the blank in Fig. 5 back upon itself along the dotted line a so that the openings 9 and 9 will register. A similar bend is made at the line 1) until the openings h and h register. The flaps e and f are then bent over to securely hold the two adjacent layers of metal together, (Fig. 6) and the ends are bent at c and (Z (Fig. 4) and the openings 2' and j register. To rigidly secure these arms to the rod 10, I pass through the openings 9 and h, a square pin or nut 15 carrying a set screw 16 adapted to bear upon the rod 10 and hold the seat-in the arm firmly against the rod. In the square pin or nut 15, I provide grooves or notches 17 to engage the edges of the forks and prevent them from spreading apart. The pin 15 is made slightly smaller than the openings 9 and h to allow it to be easily taken out upon the removal oi. the set screw which in turn permits the arm to be readily removed from the rod, or, if the set screw is only loosened, to adjust the arm longitudinally of the rod. Through the openings 71 and 1' in the legs 0 and (Z, I pass an axle-pin 18 upon which is mounted a pu lev 38.

20 and 21 indicate common nuts to more rigidly connect the pin 18 with the arm '14.

22 represents a case hardened washer.

The pin 18 is case hardened and has a funnel shaped reservoir 23 in its head (Fig. 4) adapted to be filled with a lubricant which feeds through an opening 24 from the pin and lubricates the axle of the pulley. The pulley 38, I construct ina peculiar manner by using a sheave 25 having shoulders and supported by disks 26 sprung into place between the flanges 27 on a hub 28. The hub 28 may either have upturned edges to form the flanges 27 or it may have grooves into which the spring disks will fit, as shown in Figs. 4 and 11. The sheave may be made double or single and is preferably made 015' some very light material as wood or fiber. By this construction I am enabled to obtain a very light pulley which is desirable in a machine of this character as it can be made to start earlier and stop quicker than a heavy one because of the difference in momentum. In the spinning operation, the whole frame is reciprocated so that the yarns which are spun are wound, but before the change in motion takes place the pulleys must be at rest. Therefore, as the change in motion cannot take place until the pulleys come to rest, the lighter the pulleys the more time will be saved. So also in starting a light pulley will start quicker and thus time will be saved in the operation of the machine. The arm 14 is that shown in Fig. 4C, as is also the arm 11 with the exception that this arm carries a double sheave pulley and the body of the arm is inclined upward from the dotted line m to better receive the driving band from the top of the drum 4 (Fig. 3). Arm 13 is the same as 14 except that it carries no pulley, has only one leg as cl and has two openings as 7', instead of only one. The arm 12 is slightly modified from the others to carry a bracket 29 as shown in Fig. 9. This bracket is formedof a piece of flat metal illustrated in Fig. 7. This is stamped out to be half round, see Fig. 8, the projection 30 is bent under the piece 29 at the dotted lines Z until it forms a U with the piece 29 and the openings 70 and 7a register (Fig. 10). The projection 31 is bent until the finger 32 at its end is central of the piece 29. Ears 33 and 34 are provided having eyes on and n therein. The arm 12 has its leg 0 made longer than in the other arms and bent downwardly and then laterally (Fig. 9). An opening is provided into which the finger 32 movably fits. The leg (Z of this arm 12 receives a rivet 35 loosely secured in the bracket 29 so that this bracket may be readily swung about, using 32 and 35 as pivots. The other end of the bracket 29 carries a pulley which is similarly secured as in Fig. 4: with the axle-pin 18, the washer 22, and the nut 20, with the exceptionthat the nut 21 is between thebentover end 30 and the bracket 29. (Fig. 10).

In operation the driving band 7 after leaving the drum 4: at the left hand end of Fig. 3, passes around one of the sheaves of the pulley 36 and thence to the pulley 37,, from which point it passes back to the other sheave of pulley 36 and thence along to. pulley 38; From pulley 38, the band passes to the'drum 4 and thence back and forth between the drum and spindles'as well understood by those skilled in the art. One end of a spring 39 is fastened to the car an of the bracket 29 and the other in an eye 40 of the arm 13 which tends to swing the bracket 29. to. the right. The tension of the spring can be altered by moving the arm 13 along the rod 10 or, if the construction of the frame 8 required it, the arm 13 could be placed on the other side of the bracket 29 and cause the bracket to swing to the left instead of the right. However, with the arrangement shown, the movement of the bracket 29 caused by the spring 39 will carry the pulley 37 away from the pulley 36 and tend to take up the slack in the driving band.

By my invention it is possible to readily equip existing machines with a tension device, it being only necessary to attach the rod 10 to the frame in any suitable manner and then apply to the rod the brackets described, and proper adjustment is secured simply by slipping the brackets along the rod and securing them at the desired points. After use for a short time a new band will stretch and require taking up and this can be done bythe adjustment of the brackets along the rod as just stated. It is not practicable to splice a band and if a band is put on very taut its utility is destroyed. Dismantling or assembling of the device involves only the manipulation of the set screws and nuts, the brackets being removed from or placed on the rod individually as desired and without disturbing the rod itself or its mounting.

I claim as my invention 1. In a tension device for spinning frames, a bracket for supporting a pulley formed of a single piece bent upon itself with a bifurcated end formed from the doubled portion, said bifurcated end having alining openings, a nut in said openings, and a set screw passing through the nut, the free ends of the metal piece forming the bracket being separated and having openings, substantially as described.

2. In a tension device for spinning frames, a bracket for supporting a pulley formed of a single piece bent upon itself with a bifurcated end formed from the doubled portion, said bifurcated end having alining openings, a nut in said openings, and a set screw passing through the nut, the free ends of the metal piece forming the bracket beingseparated and having openings, the two portions of the metal piece being held together by a part of one portion engaging the other portion, substantiallv as described.

3. In combination in a tension device for spinning frames, a bracket formed of a metal piece doubled upon itself and with itsfree ends separated, a pin passing through openings-in the said free ends, a nut on the pin between the free ends adapted to support a pulley, a nut on the pin outside the free ends, substantially as described.

4:. In combination in a tension. device for ispinning frames, a pivoted bracket consisting of a metal piece having an inte ral dereceiving the journal extension and the pending journal, and having a bifurcated rivet, substantially as described. 10 end consisting of an extension folded to a In testimony whereof, I affix my signature positiOn opposite the end of the main part, in presence of two Witnesses.

5 said bifurcated end being perforated, a ROBERT GRANVILLE CABLE.

sheave pin held in said openings, a stud or Witnesses: rivet in line with the journal extension, and ALICE A. BARRoWs, a bracket having upper and lower members CHAS. I-I. BAmiows.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. 0. 

